1 /*

     2  * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.

     8  *

     9  * This code is distributed in the hope that it will be useful, but WITHOUT

    10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    12  * version 2 for more details (a copy is included in the LICENSE file that

    13  * accompanied this code).

    14  *

    15  * You should have received a copy of the GNU General Public License version

    16  * 2 along with this work; if not, write to the Free Software Foundation,

    17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    18  *

    19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    20  * or visit www.oracle.com if you need additional information or have any

    21  * questions.

    22  */

    23 

    24 /**

    25  * JDK-8023368: Instance __proto__ property should exist and be writable.

    26  *

    27  * @test

    28  * @run

    29  */

    30 

    31 load("nashorn:mozilla_compat.js")

    32 

    33 // check that we cannot assign to __proto__ of a non-extensible object

    34 try {

    35     var obj = {}

    36     Object.preventExtensions(obj);

    37     obj.__proto__ = { };

    38     fail("Should have thrown TypeError");

    39 } catch (e) {

    40     if (! (e instanceof TypeError)) {

    41         fail("Expected TypeError, got " + e);

    42     }

    43     print(e);

    44 }